TreadSize

Decoded sidewall size

255/70R14 tire size

255/70R14 in inches: 28.06" overall diameter — 10.04" wide, 7.03" sidewall.

Methodology: dimensions are calculated from standard ETRTO tire-size formulas. Last reviewed June 2026 by the TreadSize editorial team.

255/70R14 tire detail photo with TreadSize diameter, width, and rim measurement card
Overall diameter 28.06 in 712.6 mm
Section width 10.04 in 255 mm
Sidewall height 7.03 in 178.5 mm
Revs / mile 719 speedo calibration

Before you fit 255/70R14: verify the vehicle placard, load index, speed rating, wheel offset, and full-lock/full-compression clearance. Nominal dimensions do not guarantee a safe physical fit.

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Full dimensions

Measurement Metric Imperial
Overall diameter 712.6 mm 28.06 in
Section width 255 mm 10.04 in
Sidewall height 178.5 mm 7.03 in
Rim diameter 355.6 mm 14 in
Circumference 2238.7 mm 88.14 in
Revolutions per mile 718.9
Aspect ratio 70%

NHTSA safety record for 255/70R14

Drawn from official U.S. government (NHTSA) consumer complaint and recall filings for this exact tire size — not the generic averages you'll find elsewhere.

Complaints on record 3 filed with NHTSA
Recalls on record 0 none on record
Reported harm 2 reported crashes · 2 injuries

What owners report fails — 255/70R14

  • Tread separation 2

These are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated failure rates, and not adjusted for how many tires of this size are in service. Popular sizes naturally accumulate more reports. Use this as a research signal, not a verdict on any specific tire. Data as of 2021. Source: NHTSA Office of Defects Investigation (public domain). Always check the latest recalls at NHTSA.gov and report a tire problem if you have one.

How 255/70R14 compares inside the NHTSA size dataset

Complaint rank #218 of 271 among 271 safety-record sizes
Vs dataset median 7 below median 10 complaints
Top failure share 67% Tread separation

This comparison is derived only from tire sizes that have a real NHTSA complaint or recall record in the TreadSize dataset. Source: NHTSA ODI — Consumer Complaints (FLAT_CMPL) + Recalls (FLAT_RCL), U.S. DOT public domain; Complaints through 2021.

Nearby safety records by complaint volume

120/70R17 3 complaints · 2 recalls 235/55R20 3 complaints · 2 recalls 305/65R17 3 complaints · 1 recalls 155/80R13 3 complaints · 0 recalls 165/25R15 3 complaints · 0 recalls 185/55R15 3 complaints · 0 recalls 185/55R17 3 complaints · 0 recalls 195/95R15 3 complaints · 0 recalls

Dataset download: JSON or CSV. Latest recall lookup: NHTSA.gov.

Related tire sizes

255/70R15 →
Decode another tire size →  ·  Compare two sizes →  ·  Plus sizing →

Frequently asked questions

What is the overall diameter of a 255/70R14 tire?

A 255/70R14 tire has an overall diameter of 28.06 inches (712.6 mm).

How tall is a 255/70R14 tire?

The sidewall height is 178.5 mm (7.03 inches), and the overall diameter from the ground to the top of the tire is 28.06 inches.

How many revolutions per mile does a 255/70R14 tire make?

A 255/70R14 tire makes approximately 719 revolutions per mile. Your speedometer is calibrated to this number.

What rim size does a 255/70R14 tire fit?

A 255/70R14 tire is designed for a 14-inch rim (355.6 mm).

Are there recalls or safety complaints for 255/70R14 tires?

NHTSA has 3 consumer complaints on record for the 255/70R14 size; the most reported issue is tread separation (2 reports). These are unverified consumer reports, not validated failure rates, and are not adjusted for how many tires of this size are in service.

All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.